html,body{
  width:100%; 
  height:100%; 
  margin:0;
}
.container{
  position:relative;
  width:100%;
  height:100%;
}
.header{
  position:relative;
  width:100%;
  height:8%;
  background-color:white;
}
.content{
  position:relative;
  width:100%;
  height:92%;
  background-image:url(../images/bgimage.jpg);
}
.login{
  margin-left:35%;
  border:2px solid #a1a1a1;<!-- 边框样式-->
  padding:200px 200px; 
  background:white;
  width:30%;
  height:400px;
  border-radius:25px; <!--调节圆周程度-->
}
.form label{
  font-size:30px;
  margin-top:20px;
  margin-left:60px;
  height:25px;
  width:20%;
}
.input{
  margin-top:10px;
  margin-left:60px;
  height:25px;
  width:70%;
}
.form select{
  margin-top:10px;
  margin-left:30px;
  height:30px;
  width:40%;
  font-size:25px;
}
.btn{
  margin-top:20px;
  margin-left:60px;
  height:30px;
  width:28%;
  font-size:20px;
}
.regist{
  margin-top:20px;
  margin-left:60px;
}
.regist font{
  font-size:25px;
  padding-left:40px;
}
.regist a{
  color:blue;
  text-decoration:none;
}
